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Alloys of Titanium were compared. Results of crevice corrosion, U-bend, and general corrosion tests in various different media are discussed in this paper. These tests were conducted in order to better understand how Grade 38 compares to common titanium alloys.
Titanium Grade 38 (Ti-4Al-2.5V) has good cold-workability and exhibits relatively high ductility similar to Titanium Grade 9 (Ti-3Al-2.5V), but has strength properties approaching that of Titanium Grade 5 (Ti-6Al-4V). Grade 38, which was originally developed for industrial and armor applications, has higher strength than most other titanium grades and can be used in higher temperature applications up to 600 °F. Results of crevice corrosion, U-bend, and general corrosion tests in various different media are discussed in this paper. These tests were conducted in order to better understand how Grade 38 compares to common titanium alloys. The alloys included in this comparison were: • ASTM Grade 2 Titanium, UNS R50400 • ASTM Grade 5 Titanium, UNS R56400 • ASTM Grade 9 Titanium, UNS R56320 • ASTM Grade 12 Titanium, UNS R53400 • ASTM Grade 38 Titanium, UNS R54250 The unique combination of high strength, ductility, formability, workability, and corrosion resistance gives Grade 38 versatility in a wide variety of applications.
Keywords: Titanium, Grade 38, corrosion, formability, high strength.
Several experiences with the use of titanium heat exchangers in refining processes are summarized. These involve distillation column overhead condensers in atmospheric crude distilling units, fluid catalytic cracking units, delayed coking units, and sour water strippers. The causes of problems are discussed. Needs for additional data are highlighted.
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This study presents an overview of a number of factors influencing the pitting corrosion of Ti in aggressive environments. Effects of temperature and metal cations on pitting corrosion of Ti.